Microstructure of epitaxial α-Fe2O3 grains in Ba-ferrite thin films grown on sapphire (001)

T. S. Cho; S. J. Doh; J. H. Je; D. Y. Noh

doi:10.1063/1.123753

Microstructure of epitaxial α-Fe₂O₃ grains in Ba-ferrite thin films grown on sapphire (001)

T. S. Cho, S. J. Doh, J. H. Je, D. Y. Noh

Department of Nano & Advanced Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Epitaxial α-Fe₂O₃ grains are confirmed to exist in Ba-ferrite thin films grown on sapphire by RF sputter deposition., and are proven to greatly degrade the films' magnetic properties. These antiferromagnetic grains form during the crystallization of the amorphous films. The grains have a crystal domain size similar to that of the Ba-Fe₂O₃ grains, of about 250 angstroms in the film plane. Their in-plane crystalline axis is aligned to that of sapphire, while the Ba-ferrite film is rotated by 30° in the film plane.

Original language	English
Pages (from-to)	2050-2052
Number of pages	3
Journal	Applied Physics Letters
Volume	74
Issue number	14
DOIs	https://doi.org/10.1063/1.123753
State	Published - 5 Apr 1999

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abstract = "Epitaxial α-Fe2O3 grains are confirmed to exist in Ba-ferrite thin films grown on sapphire by RF sputter deposition., and are proven to greatly degrade the films' magnetic properties. These antiferromagnetic grains form during the crystallization of the amorphous films. The grains have a crystal domain size similar to that of the Ba-Fe2O3 grains, of about 250 angstroms in the film plane. Their in-plane crystalline axis is aligned to that of sapphire, while the Ba-ferrite film is rotated by 30° in the film plane.",

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Microstructure of epitaxial α-Fe₂O₃ grains in Ba-ferrite thin films grown on sapphire (001)

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